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Windows 7: External HDD can't be open but can be partially detected

Hey guys, I have a problem with my external HD, after coming home, my HD can't be opened but detected and no auto run was appearing, the HD light is always bright, I think it's working all the time but I can't even open it. Just before home, I plugged the external HD to another computer, it was detected and can be opened. I can hear the USB plugged sound "Device Connect", but no "Device Disconnect" or "Device Failed to Connect" sound in my PC at my house. There are no clicking noise in the external HDD, it can't be detected in "Disk Management", tried to rescan and refresh the disk management and still nothing, but it can be detected in "Devices and Printers" in Control Panel so it's partially detected. I don't know about the USB cable, I have no idea on how to detect a broken USB cable. Please give me actions that WON'T delete my files inside the drive, just give me that answer if there are no more options left. Thank you for your time and knowledge for helping me.
Specs:
HP Pavilion P6640D
Windows 7 Home Basic 32-bit (6.1, Build 7601)
Pentium® Dual Core CPU E6700 @ 3.20 GHz
Foxconn 2A8C
2048 MB RAM Samsung 2rx8 PC3 10600u
Seagate Barracuda ST3320418AS 320 GB @ 7200 RPM
Western Digital 32000BEV External HDD 298.09 GB (undetected external HD)

Note: If you wonder if why there are black colors in the corners of the windows, I used paint to place them in a single picture.

Edit: Tried to unplug and re-plug the device, still nothing, restarted the PC and do the plugging thing, still nothing.
Edit 2: Did a sfc /scannow, it said to me in the CMD that it found corrupt files (I don't know what files), some can't be fixed.
Edit 3: My BIOS detected the hard drive, however in safe mode, it wasn't detected.

The way you have put up your problem must have confused and scared everybody.

Anyway let us rework and see whether we can get to know something about.

Just before returning home, you plugged it into another PC and you were able to open it. By that I presume it was working perfectly. Right?

Now go to that PC and plug-in your drive into that. Check and let us know whether it is still working fine. If you can access all the files, then copy it to another external drive.

If you can't access the files then check whether it shows up in 1. the Device Manager ( Any error message in Properties? ) 2. Does it show up in Disk Management? If so please take a screenshot and post it. Disk Management - Post a Screen Capture Image

Remember on that other PC and not on your PC. And use the Windows snipping tool to get your screencapture as per the above Golden tutorial.

Is this external drive powered from an external adapter or is is bus powered from the USB port? If it's the latter, it may be that the computer can't supply enough power to it - hence the clicking noises. I've had this problem with some of these drives - work with some computers but not others. Try connecting it another USB port.

@jumanji: It was an internet cafe computer that I used, a Windows 7 64-bit, don't know what's the real version but it's Home Premium or above since the taskbar is translucent. Tried to visit it today but it was closed, I'll try tomorrow and see if it works.
@Britton30: I just plugged it in, I wasn't using it, it was there for standby.
@johngee: It would be weird, when I plug my drive to my own PC, it works all the time, I always use the front right port for the drive and it works, but this time it's not working, tried to use the front left port, nothing, tried the vacant rear port, nothing. I'll try to use the other 3 ports and give it a shot.

Here's the sitrep guys, this ain't the computer that I used before going home since the cafe was closed again, I asked the owner, he said that they aren't sure when are they gonna open it again. I'm currently using a different PC on a different internet cafe and it was detected but can't open the drive since before you can open it, there is a shortcut appearing naming "RAIN", and an error appearing when I click it, I had experience folders turning into shortcuts w/o reasons and I can still open them, this one is different.
The the code for the target location.

Not to worry. Your external drive which is a 300GB drive shows some 42 GB free. All your data is safe. What is now clear is your drive is OK but inflicted with the shortcut virus - which only affects USB drives. There can be many variants, but let us start and find out.

Now plug-in your problem drive into your PC. Does it show up in Disk Management? ( I would be surprised if it does not, for it did show up on the other PC)

Plug-in only the problem drive while pressing the left Shift key so that autorun is disabled.

Run WinRAR, navigate to the afflicted drive, click/double click on it to explore.

It will show all the files including the hidden files present in that particular drive.

Search for the file autorun.inf and open it with Notepad. Look for any .exe file entry in the text. This is the culprit that gets executed. Take a note of this .exe file name and close it. ( if you do not find any .exe file, please take a snapshot of the the autorun.inf in the Notepad and upload it for our examination. Use the Windows snipping tool to make the screenshots.

Still not working jumanji, only "Devices and Printers" can detect it, while for the others can't, MY computer can't detect it for some reason, while for OTHER computers can detect it, I think this is more on computer problem rather than an external HDD problem, there's no "Snipping Tool" in my PC. Those screenshots in post #8 came from an OS that is a hybrid of XP and Windows 7 !?!?, looks like a W7 but has the functionality of an XP, nevertheless, that other PC can still detect it.

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